Process and device for securing a fastening member in a borehole

Details Process and device for securing a fastening member in a borehole Process and device for securing a fastening member in a borehole

1985-01-08

1987-03-24

Taylor, Dennis L.

Hydraulic and earth engineering

Earth treatment or control

Chemical

405261, 405303, E21D 2002

Patent

active

046521755

ABSTRACT:
Before injecting a flowable hardenable mass for anchoring a fastening member in a borehole, a coating solution is sprayed into the borehole for securing any drilling dust remaining on the borehole surface. A device for introducing the hardenable mass into the borehole includes a feed duct for injecting the mass. A container holding a coating solution is provided in the device. Another duct laterally surrounds the feed duct and forms an annular passage and a tube extends from the container to the annular passage for spraying the solution onto the borehole surface.

REFERENCES:
patent: 3030234 (1962-04-01), McClinton
patent: 4075374 (1978-02-01), Jorgenson et al.
patent: 4185431 (1980-01-01), Brownlee

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